Fix CustomListOutputParser format instructions (langchain-ai#2860)

* Fix format instruction of CustomListOutputParser when length is undefined * removing temporary example * Fix formatting --------- Co-authored-by: jacoblee93 <[email protected]>
jdubois · Oct 10, 2023 · 49be133 · 49be133
1 parent bc0c4fb
commit 49be133
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/langchain/src/output_parsers/list.ts b/langchain/src/output_parsers/list.ts
@@ -100,6 +100,10 @@ export class CustomListOutputParser extends ListOutputParser {
    * @returns A string containing instructions on the expected format of the response.
    */
   getFormatInstructions(): string {
-    return `Your response should be a list of ${this.length} items separated by "${this.separator}" (eg: \`foo${this.separator} bar${this.separator} baz\`)`;
+    return `Your response should be a list of ${
+      this.length === undefined ? "" : `${this.length} `
+    }items separated by "${this.separator}" (eg: \`foo${this.separator} bar${
+      this.separator
+    } baz\`)`;
   }
 }